<template>
  <div class="cart">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="list in cartInfoList" :key="list.id">
          <li class="cart-list-con1">
            <input
              type="checkbox"
              name="chk_list"
              :checked="list.isChecked"
              @change="getChange(list, list.isChecked)"
            />
          </li>
          <li class="cart-list-con2">
            <img :src="list.imgUrl" />
            <div class="item-msg">
              {{ list.skuName }}
            </div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ list.skuPrice }}</span>
          </li>
          <li class="cart-list-con5">
            <a
              href="javascript:;"
              class="mins"
              @click="addToCartGoods(list, -1)"
              >-</a
            >
            <input
              autocomplete="off"
              type="text"
              :value="list.skuNum"
              minnum="1"
              class="itxt"
              disabled
            />
            <a href="javascript:;" class="plus" @click="addToCartGoods(list, 1)"
              >+</a
            >
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ list.skuPrice * list.skuNum }}</span>
          </li>
          <li class="cart-list-con7">
            <a href="#none" class="sindelet" @click="delGoods(list.skuId)"
              >删除</a
            >
            <br />
            <a href="#none">移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input
          class="chooseAll"
          type="checkbox"
          :checked="isAllChecked"
          @click="allChecked(isAllChecked)"
        />
        <span>全选</span>
      </div>
      <div class="option">
        <a href="#none" @click="deleteAll">删除选中的商品</a>
        <a href="#none">移到我的关注</a>
        <a href="#none">清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">
          已选择 <span>{{ goodsNum }}</span
          >件商品
        </div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ goodSummary }}</i>
        </div>
        <div class="sumbtn">
          <a class="sum-btn" @click="referOrder">结算</a>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {
  cartList,
  getIsChecked,
  addToCart,
  deleteGoods,
} from "../../api/Shopcart";

export default {
  name: "ShopCart",
  data() {
    return {
      cartInfoList: [],
    };
  },
  mounted() {
    this.setCartList();
  },
  methods: {
    //请求购物车数据
    async setCartList() {
      let res = await cartList();
      this.cartInfoList = res[0] ? res[0].cartInfoList : [];
    },

    //修改单选按钮状态
    async getChange(list, isChecked) {
      list.isChecked = !isChecked;
      await getIsChecked(list.skuId, isChecked ? "0" : "1");
    },

    //点击按钮加减
    async addToCartGoods(list, skuNum) {
      if (list.skuNum <= 1 && skuNum === -1) return;
      list.skuNum += skuNum;
      await addToCart(list.skuId, skuNum);
    },

    //单项删除
    async delGoods(skuId) {
      this.cartInfoList = this.cartInfoList.filter((item) => {
        return item.skuId !== skuId;
      });
      await deleteGoods(skuId);
    },

    //全选切换状态
    allChecked(isChecked) {
      this.cartInfoList.forEach((item) => {
        item.isChecked = !isChecked;
      });
      this.cartInfoList.forEach(async (item) => {
        await getIsChecked(item.skuId, isChecked ? "0" : "1");
      });
    },

    //删除所有选中
    deleteAll() {
      let re = this.cartInfoList.filter((item) => {
        console.log(item.isChecked);
        if (item.isChecked) {
          return item;
        }
      });
      this.cartInfoList = this.cartInfoList.filter((item) => {
        if (!item.isChecked) {
          return item;
        }
      });

      re.forEach(async (item) => {
        console.log(item.skuId);
        await deleteGoods(item.skuId);
      });
    },

    //提交订单
    referOrder() {
      let user = JSON.parse(localStorage.getItem("user")) || false;
      if (!user) {
        alert("请登录账号");
        return;
      }
      this.$router.history.push("/trade");
    },
  },

  computed: {
    isAllChecked: {
      get() {
        let con = this.cartInfoList.reduce((preValue, item) => {
          if (item.isChecked) return ++preValue;
          return preValue;
        }, 0);
        if (con === this.cartInfoList.length) return true;
        return false;
      },
    },
    goodsNum() {
      return this.cartInfoList.reduce((preValue, item) => {
        if (item.isChecked) {
          return ++preValue;
        }
        return preValue;
      }, 0);
    },
    goodSummary() {
      let num = 0;
      this.cartInfoList.forEach((item) => {
        if (item.isChecked) {
          num += item.skuPrice * item.skuNum;
        }
      });
      return num;
    },
  },
};
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 4.1667%;
        }

        .cart-list-con2 {
          width: 45%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 300px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con3 {
          width: 20.8333%;

          .item-txt {
            text-align: center;
          }
        }

        .cart-list-con4 {
          width: 12.5%;
        }

        .cart-list-con5 {
          width: 12.5%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 12.5%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 12.5%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: "Microsoft YaHei";
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>